Machine for scouring wheat



(No Model.)

J. T. EWAN.

MAGHINBFOR SGOURING WHEAT 6m. No. 287.370'. Patented Oct. 23, 1883.

WITNESSES: g INVBNTOR:

WM n! jg ATTORNEYS ATENT Erica.

JOHN T. .EWAN, OF BETHALTO, ILLINOIS.

MACHINE FOR SCOURING WHEAT, 80C.

SPECIFICATION forming part of Letters Patent No. 287,370, dated October23, 1883,

Application filed June 10,1893. (No-model.)

.To all whom it may concern:

Be it known that 1, JOHN T. EWAN, of Bethalto, in the county of Madisonand State of Illinois, have invented a new and Improved Machine forScouring Vheat and other Grain, of which the followingis a full, clear,and exact description.

The object of my invention is to provide a new and improved machine forscouring, brushing, and separating wheat and other grain preparatory togrinding; and the invention consists of the combination and constructionof parts, substantially as hereinafter fully set forth and claimed.

Reference is to be had to the accompanying drawings, forming apart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation ofmy improved scouring-machine, with oneside of the fanbox removed, and a portion of the latter broken away,showing its connection with the suction-chamber. Fig. 2 is a sectionalelevation of the same, taken on the line 00 x of Fig. 3. Fig. 3 is asectional elevation taken on the line 3 yet Fig. 2; and Fig. 4 is adetailed sectional elevation of one of the cylinders, showing thepreferred form of securingteeth.

represents the brushing-cylinder. These are surrounded by the perforatedmetal casings O D, and are journaled, one above the other,

in the end compartment, J, of the main inclosure of the machine, and arecovered with the wire teeth a a, that act upon the grain to scour, end,and brush it as the cylinders revolve in the casings O D.

The teeth may be secured directly to the cylinder, or to leather,canvas, or textile material I), applied so as to completely encompassthe cylinders circumferentially, or it may be applied thereto in strips,and they (the teeth) may be arranged slantingly or straight, and may bebeveled, blunt, or plain pointed.

The perforated casings O D are connected by small pipes or openings 0,and the casing G receivesthe grain at d, and the grain is discharged at6, so that the grain is compelled to traverse the whole length of boththe cylinders A B in its passage through the machine.

Before entering the casing O, and all the while during its passagethrough the machine, the grain issubjected to the action of a strong.draft or current of air, which is maintained by the exhaust-fan E, andwhich separates and carries off the dust and otherimpurities mingledwith and detached from the grain.

The fan E and main casing or. inclosure of the machine may be variouslyarranged to maintain this current or draft of air through the grain asitenters the machine and while under treatment; but I prefer to construct'the main inclosure so as to form the suction box or chamber F andpassage, G and H, which put the box F in communication with the endcompartment, J the former through the short passages g g, the latterthrough the series of holes h hand to arrange the fan E to exhaust theair from the box F, the grain being fed to the perforated easing G fromthe receiving-chamber K, through the passage y, where it meets acontinuous upward current of air, as will be understood from Fig. 2. Thegrain enters the receiving-chamber K from the inclined bottom j of theshaking hopper L. Above this bottom j is fitted in the hop- )er thescreen to which the rain is first fed, and which separates the straws,sticks, stones, and other coarse impurities from the grain before itenters the machine.

The cylinder A is by preference made conical, as shown in Fig. 3, andits shaft a is made of sufficient length and its pulley I)" ofsufficient width to permit the shaft cto. be moved longitudinally in themachine for adjusting the cylinder A with respect to the casing O andopenings 0, for increasing or diminishing the space between the ends ofthe teeth a and the casing 0, thus regulating the violence with whichthe grain will be secured and the speed at which it will be admitted totheaetion of cylinder; and in orderthat this cylin der A may be adjustedwhile the machine is inoperation, I swivel to one end of the shaft a therod M, which is supported by the yoke N, so that by drawing or pushingupon this red the cylinder may be adjusted and the action of the machineregulated by the attendant without the trouble and delay of stopping themachine.

The shaft 1) of the brushing-cylinder B is the power-shaft of themachine, from which, I other at one end, of the verticalpassage H,comthrough suitable pulleys and the belts k l m, municating with thechambers F J, passage G,

motion is imparted tothe scouring-cylinder having downwardly projectingdraft pas 15 A, fan E, and shaft 1), Which, through suitasages g 9, onecommunicating with the cham- 5 ble eccentrics and connectingplates, 1219 re- I ber J and the other connecting with the chamciprocates thehopper L. I ber F, and the receiving-chamber K, discharg- Having thusdescribed myinvention, Iclaim ing into the tube 9, substantially as andfor as new and desire to secure by Letters Patentthe purpose set forth.

The combination, with the suction box or J OHN THOMAS EVVAN. 1o chamberF, the end chamber, J, cylindersAB, XVitnesses:

one having an inclined surface, and the aper- WVM. L. PIGGOTT,

tured casings O 1), communicating with each JACOB D. PIGGOTT.

